Hose coupling



L. HERMANN HOSE COUPLING Jan. 28, 1941.

Original Filed March 215. 1939 INVENTOR. BY Lou/5 HERMANN ATTORNEY. I

Patented Jan. 28, 1941 PATENT OFFICE i HOSE courmrzo' Louis Hermann, Cleveland, Ohio, assignor to The Four Power Company, Cleveland, Ohio Substitute for abandoned application Serial No. 263,690,' March 23, 1939. This application 'Mfll'Oh 16, 1940, Serial N- 324,252

1 Claim.

vide a simple economical device which facilitates the mixing of liquids. Another object is to provide a device of the character described which is stationary, out of the way, and which does not interfere with the i5 ordinary manipulation of the hose.

A further object is to construct such aspirator so that a proper suction will be maintained and which minimizes the possibility of back pressure or reverse. flow. i

These and other objects as well as a fuller understanding of the invention may be had by referring to the following description and claim together with the accompanying drawing in which like parts are designated by like reference characters and in which:

Figure 1 is a View of the device constituting this invention attached and ready to use;

Figure 2 is an enlarged view of the device showing parts disassembled;

Figure 3 is a vertical sectional view of the main element of the device;

Figure 4 is a bottom view of the device; and

Figure 5 is a vertical sectional view of the strainer element of the device.

85 The instant invention consists of a metal body member III which may be of a generally cylindrical shape. Extending axially through the body ll there is a longitudinal channel formed of a series of interconnected ducts l2, i2a, i3 and Ila.

I The channel is somewhat tapered, that is, the

admission opening or duct 12 is smaller than the discharge opening l3. The smallest duct 12 is about three-thlrty-seconds of an inch in diameter and is about one-sixteenth of an inch long. Its

diameter is about one-half that of its contiguous duct Ho and is also just about one-half as long. The next intermediate duct I3a has a diameter approximately twice that of the duct Ho and is about four times long.' It, too, is about as long as the adjacent lower duct I} but is only about three-fourths as large indiameter.

The upper end of the body member, the end that abuts the water faucet l8 and which has the small duct l2, has an outer knurled surface I4 is and an inner threaded means I5 for engagement with the related threads of the faucet IS. The lower end of thebody member, the. end that'receives the garden hose i9, is provided with a similar outer knurled surface 22 and has a male thread l8 thereon for connection to the hose at- 5 taching member. The top. end it of the body member In is also provided with a simple rubber washer ll just below and within the threaded portion II.

The inspiratory nozzle consists of a short piece 10 of pipe 24 which fits into an angular hole in and which is firmly attached to the body member. This pipe 2 connects with the duct 23 which in turn opens into the channel duct l2a. The inspiratory duct 23 enters into the aspiratory .chan- 15 ml duct 12a also at an angle but which angle must be any angle other than a right angle. 2

The free end 25 of the inspiratory nozzle pipe 24 is provided with means, such as the narrowed portion 25, for accommodating a rubber tube or flexible conduit 26. The tube reaches down into the container or pail 20, the lower end 26 of which is provided with a small strainer 28. The strainer 28 is also made of metal. It consists of a hollow cup-like element in which there are several 25 r-adial holes 23. Extending upward from the cuplike element and attached thereto is the tubular neck portion 30 to facilitate engagement with the rubber tube or conduit 26.

In operation, after the various parts are assembled as illustrated and the fertilizing mixture or fluid 21 is in the pail or container 20, the water faucet I6 is turned on. As the water passes through the body member I0 its pressure de- 3 creases because of the constantly enlarging chan- I nel II. It thereby causes a suction which draws the fertilizing fluid up and through the conduit 26, the inspirator nozzle 24 and the duct 23, mixing it uniformly with the water. The water so 0 treated is sprayed out of the garden hose nozzle 31 in the most convenient, even and efficient manner.

The size of the body member I0 and the design of the tapered channel II and the duct 23 is suit- 5 able for ordinary purposes substantially as illustrated in the drawing. With this construction, it has been found in practice that a fertilizing fluid made of one pound of ammonium sulphate dissolved in one gallon of water will be satisfac- 50 tory and will not burn a lawn or harm the most delicate foliage. The ammonium sulphate, which incidentally is particularly desirable for use with this device because of its high nitrogen content and moderate price, is emitted at approximately ll fluid sprayed through the duct, aspirator. conduit and strainer; By permitting clear water to runthrough the'de-fu vice and the hose for a few minutes after the fertilizing fluid has passed through, all trace of any elements which might be injurious" to therubber of the hose will be removed.

Another advantage found in the instant device is that thesystematic arrangement. of the series of ducts l2, l2a, li and Ila and the introduction of the inspiratory duct 23 therein permits a rather wide range of water pressures towork successfully with the device. Heretofore, it the" main water line pressure was too great or. if they spray or constriction member of the nozzle member 3| was too fine, the water of the main hose had a tendency to back up and run into the'fertilizer pail. It has been found in practice that by constructing the :aspinator coupling as herein described, thereis less of a tendency to cause a reverse flow of the water;

It will now be clear that there is provided by this invention ahose couplingwhichlaccomplishes the objects of the invention. While the invention has been described in a specific form,

and while certain special terms and general langauge have been used, it is to be undeistood'that the embodiment of the invention as described and shown is suggestive only and is not to be considered in a limiting sense; It is tobe further un-. derstood that there may be other forms or adaptations of the device and those modifications are also considered to be within the broad scope of the invention as no limitations upon'it are intended other than those imposed thereon by the scopeof the appended-claim.

I claim: 1

An aspirator coupling adapted to be interposed between a faucet and a garden hose, comprising in combination, a body member having a channel portion extending longitudinally therethrough opening into the said faucet and hose and including a series of interconnected ducts, the said series of ducts consisting of. four longitudinally aligned ducts each having parallel wall surfaces, the first ofthe 'saidducts' being-approximately 1 of an inch long and, 135 of an inch in diameter, the second of thesaid ducts being approximately of an inch long and fiofan inch indiameter, the third of the said ducts'being approximately ofan inch long and of'an inch in diameter;

and the fourth of the said ducts being approximately V2 of an inch long and 7%; of an inch in diameter, and an inspiratory tube attached to the body member and opening into the said second duct adjacent to its connection with the said first duct. I a. g a

, ,LOUIS HERMANN. 

